Dream Tower

I have had this dream before. There is a tower at the center of a building shaped like a moon. It is surrounded by open space but two visible metal bridges connect with the top. The top has a needle and the round, bulging center, is entirely window.

At the top is a library.

I've been there when it is storming and when it is clear. I have looked for things successfully there. I have gone into other dreams from there. I know the place.

Tonight it is clear but dark. The windows are lit and pierce the sky like a light tower. I go up the stairs.